Question

During a phase change, the temperature of a substance ____

decreases

increases

may increase or decrease

remains constant

Answer 1

During a phase change, the temperature of a substance remains constant

Step-by-step explanation:

Step 1:

During phase change, the energy that is required, will be used to separate the molecules ( to change phase).

This energy is not used to change the temperature.

Since the kinetic energy of the molecules remains the same, the temperature of the substance remains constant.